Jetty construction



NOV. 22, 1932. Q R, VAN QRMAN 1,888,364

JETTY CONSTRUCTION Filed Oct. l. 1930 Patente-d Nov. 22, 1932 CLBE VAN ORMAN, F TOPEKA, KANSAS JETTY COSA. STEUCTEON Application filed October l, 1930.

lt is the object of my invention to produce a current-retard, or a device suitable for use in con li a' the deposition or" sand-bars in treams or rer protectig the banks of streams .ga-inst the eroding,- action of the Water which hows in co` t with them. More specifically, it is my objecf. to produce a current-retard of a e ible nature which is adapted for use in a i of situations. A further object of my Y*enti on is produce a current-retard orn nele and economical construction Which ove durable and eliiective in use.

ln carryingl out my invention, l build my current-retard of a number of units, each oi' which comprises an open-Wound helical coil of steel o iron wire or similar material. The current-re -d may embody a single one of such coils, but 'fera-.bly embodies a plurality i' con C d in parallel relation and se- The turns of one of the coils l held in properly spaced 'ling the coil at intervals to a i :tending element which may ke thiorln of cable by which the comete current-retard is anchored in place. The .ion or the open-Wound coils in retarding velocity of the stream-flor.T to cause the osition of sediment may be assisted by one more screens or other means adapted to n small enough to pass between of the current-retard coils. accompanying drawing illustrates my invention: Fig. l shows a current-retard embodying my invention used as a mattress to n ci the current-retard; llig. 3

view illustratingl the manner v ich the individual coils of the retard are el is a view similar to Fig. 2, showing a slightly modified arrangement;

i aperspec" Jh Eormed 5 Fig.

is an end elevation of the retard; and

is a perspective view showina the reas used to create sand-bars in the stream. is reviously stated, my current-retard is 'orin.e.fof one or more open-Wound helical coils l0 or Wire or similar material. Associated with one oi such coils, l provide a longitudinally extending element ll which is conveniently in the form of a Wire cable. At

Serial No. 15.

intervals, the coil l0 is secured to the cable ll as by means of ivire ties l2.

lf the retard is to embody more than one coil, as it usually does, the otuer coils are disposed parallel to the coil, preferably in overlapping relation as indicated in Fig. 5, with the turns of each coil extending into the spaces between the turns of the adjacent coils. rlhe coils are secured together, conveniently by means of Wire ties i3 at points Where the coil-turns of the individual coils cross. Genorally7 it will not be necessary to use more than one oli the cables ll, but additional cables can be used if desired.

rEhe individual coils from which the retard is constructed maybe formed as indicated in Fig. 3. TWire ot the type adapted for use in my current-retard is usually marketed in the form et a closely Wound coil 15. The Wire can be drawn oli from this coil axially as indicated in Fig. 3 to form the open-Wound coil of the retard. As it is drawn oil from the supply-coil l5, the Wire may be secured at intervals to the cable l1 in order to space the turns properly.

The helical coils o which the currentretard is composed may alllbe or the same hand, as indicated in Fig. 2; or adjacent coils may be of opposite hand, as indicated in Fig. 4. l prefer the latter construction, as I believe it results in a current-retard of greater strength.

The retard built up as above described may be used in a variety of situations. In Fig. l, have shown a retard as used to protect the caving bank ol' a stream. Here, the number of individual open-Wound coils is sucient to create a mattress extending desirably jfrom or above the high-Water mark to a Qoint below the surface of the stream. The retard is shown as held in place by transversely extendingcables secured to stakes 17 on the bank or stream-bed.

in 6, t ie retard is shown as extending transversely into the stream from a bank thereof in order to retard the current adjacent such bank and 'orm a bar on the downstream side of the retard. lWhen the retard is to be so used, the cable l1 may extend beyond the ends of the retard and may be secured to anchoring stakes 17 to hold the retard in place.

Drift carried downstrean'i by the current is intercepted by the retard with the result that the velocity of stream-flow in the vicinity of the retard is decreased and sediment is deposited. To facilitate the deposition ot sediment behind the retard, the coils l() may be supplemented with a screen Q() which, as shown in Figs. 2 and 5, extends longitudinally of the retard and is supported against the inside of one ot the coils i0. This screen 20 is shown in the drawing as a wire-mesh screen, but brush or other means may be used to accomplish the same object. '.lhe. purpose of the screen Q0 is to catch small dritt which might otherwise pass through the retard. Such drift collected on the screen serves turther to retard the velocity .cream-flow and thus to aid in the deposition oi sediment adjacent the retard.

It will be apparent that a cnrrent-retard embodyingr the invention abmfe set .tcrth will be adaptable for use in a variety ot situations. It can be used alone or in afzffioci; tion with jetties of heavier constru' dition, because of its flexible adapted to follow the contours or stream-bed, thus increasing its ness.

I claim as my invention 1. A current-retard, comprising ir. of

effectivea plurality of open-wound self-supporting helices disposed generally parallel to ef h other, the turns of each helix overlapping but not interlinking respectively the turns ot' adjacent helices, and means for securing said helices together. n

2. A current-retard, comprisina' an openwound self-supporting helix ot mire or the like, successive turns of the helix bein e' spaced apart a distance at least several times reat as the axial thickness ot the wire or the like of which the helix is formed.

3. A current-retard, comprising an openwound self-supporting helix ot wire (r the like and ay member extending longitiu nally of said helix and secured to turns thereofY to space such turns, successive turns o" the helix being spaced apart a di tance at least severa times as great the axial thickness of the wire or the like ot which the helix is former 4. A current-retard as 'forth in claim 3 with the addition that said longitudinally extendingr element is a cable, said cable extending beyond the ends ot said helix tor attachment to anchoring means.

5. A current-retard, comprising an openwound helix of wire or the like, and d it catchingr means extending between adjacent turns of said helix, successi 'e tn ot the helix being spaced. apart a distance at least several times as great as the axial thickness of the wire or the like of which the helix is formed.

6. A current-retard, comprising a plurality of open-wound helices disposed generally parallel to each other, the turns of each helix overlapping but not interlinking respectively the turns ot' adjacent helices, means for securing said helices together, and a member extending longitudinally ot one of said helices and secured to turns thereof to space such turns.

7. A current-retard, comprising a plurality of open-wound helices disposed generally parallel to each other, the turns of each helix overlapping but not interlinkin g respectively the turns of adjacent helices, means for securing said helices together, a cable extending longitudinally of one of said helices and secured to turns thereof to space such turns, and anchoring means to which said cable is attached to aid in holding the retard in place.

8. The process o' making a current-retard, comprising drawing wire axially from a close-wound coil of wire to torni an openwound helix, and securing turns ot' said helix to spacing means.

9. A current-retard, comprising an open wound helix ot wire or the like, and a driftcatching screen supported from said helix ard xtemling between adjacent turns` thereof.

In witness whereof, I have hereunto sct my land at Topeka, Kansas, this ith day oi September, A. D. one thousand nine hundred and thirty.

CLARE R. VAN ORMAN. 

